Uncaught TypeError: Unsupported operand types: string + float

First of all – Great plugin!

When in checkout, we get a fatal error on the following line /wp-content/plugins/shipping-zones-by-drawing-for-woocommerce/classes/class-szbd-ajax.php:110.

Some weird spaces in this line as well. Hopefully this can be fixed asap.

$cost_column[$t->get_id() ] = $show_tax == 'incl' ? $t->get_cost() + $t-> get_shipping_tax() : $t->get_cost();

I fixed it manually by making sure the values are float and not string, but it will be overridden in the next update.